Add Ghostscript and PDF setup

Author: schlessera

.github/workflows/testing.yml

@@ -109,6 +109,12 @@ jobs:
         with:
           files: "composer.json, behat.yml"
 
+      - name: Install Ghostscript
+        if: steps.check_files.outputs.files_exists == 'true'
+        run: |
+          sudo apt-get update
+          sudo apt-get install ghostscript -y
+
       - name: Set up PHP envirnoment
         if: steps.check_files.outputs.files_exists == 'true'
         uses: shivammathur/setup-php@v2
@@ -133,6 +139,11 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-composer-
 
+      - name: Change ImageMagick policy to allow pdf->png conversion.
+        if: steps.check_files.outputs.files_exists == 'true'
+        run: |
+          sudo sed -i 's/^.*policy.*coder.*none.*PDF.*//' /etc/ImageMagick-6/policy.xml
+
       - name: Install dependencies
         if: steps.check_files.outputs.files_exists == 'true'
         run: COMPOSER_ROOT_VERSION=dev-master composer install --prefer-dist --no-progress --no-suggest